Re: Look for a mother of a child (Roelof Wobben)

On 9/03/2014, at 12:48 PM, Kaitain Jones wrote:
> 
> I also prefer
> 
> is_mother_of( Mother, Child )
> 
> in the same way that I would prefer
> 
> is_greater_than( BigNumber, SmallNumber )
> 
> ...but some people think the other way around makes more sense to them.
> (Shrugs.) Just be consistent, I suppose.

My preference here is 

	mother_child(Mother, Child)

where the order of the words in the predicate name
matches the order of the arguments.

Since this relation has a Child->Mother functional
dependency (or very nearly; I am aware of all the
modern variations from surrogacy to egg donation)
I would probably use

	child_mother(Child, Mother)
	child_father(Child, Father)